Method of forming flexible packages and novel flexible packages
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United States of America Patent
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Nov 28, 1989
Issued Date -
N/A
app pub date -
Mar 13, 1989
filing date -
Dec 18, 1987
priority date (Note) -
Expired
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Abstract
High performance polymer systems based on water dispersed polyurethanes obtained from the reaction of NCO terminated prepolymers with a peroxide compound containing at least one active hydrogen atom, methods of making such polymer systems and their use as hydrolytically stable flexible substrate bonding agents are disclosed. Flexible packages, e.g., retortable laminate pouches, are formed by bonding together sections of films, foils or like flexible substrates using such adhesives.
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